2005 Porsche Tennis Grand Prix
Date	3–9 October
Edition	28th
Category	Tier II
Draw	28S / 16D
Prize money	$650,000
Surface	Hard (Greenset) / indoor
Location	Filderstadt, Germany
Venue	Filderstadt Tennis Club
Champions
Singles
Lindsay Davenport
Doubles
Daniela Hantuchová Anastasia Myskina
← 2004 · Porsche Tennis Grand Prix · 2006 →

The 2005 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Club in Filderstadt, Germany that was part of Tier II of the 2005 WTA Tour. It was the 28th edition of the tournament and was held from 3 October until 9 October 2005. First-seeded Lindsay Davenport won the singles title and earned $98,500 first-prize money.^[1]

Lindsay Davenport defeated Amélie Mauresmo 6–2, 6–4

• It was Davenport's 5th singles title of the year and the 50th of her career.

Daniela Hantuchová / Anastasia Myskina defeated Květa Peschke / Francesca Schiavone 6–0, 3–6, 7–5

• ITF tournament edition details Archived 2016-03-17 at the Wayback Machine
• Tournament draws